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The Scientific World Journal
Volume 2014, Article ID 917174, 8 pages
http://dx.doi.org/10.1155/2014/917174
Research Article

Development of Curves of Laterally Loaded Piles in Cohesionless Soil

Department of Geotechnics and Transportation, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81300 Skudai, Johor Bahru, Malaysia

Received 24 October 2013; Accepted 2 December 2013; Published 16 January 2014

Academic Editors: C. W. Chang-Jian and M. Vona

Copyright © 2014 Mahdy Khari et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The research on damages of structures that are supported by deep foundations has been quite intensive in the past decade. Kinematic interaction in soil-pile interaction is evaluated based on the curve approach. Existing curves have considered the effects of relative density on soil-pile interaction in sandy soil. The roughness influence of the surface wall pile on curves has not been emphasized sufficiently. The presented study was performed to develop a series of curves for single piles through comprehensive experimental investigations. Modification factors were studied, namely, the effects of relative density and roughness of the wall surface of pile. The model tests were subjected to lateral load in Johor Bahru sand. The new curves were evaluated based on the experimental data and were compared to the existing curves. The soil-pile reaction for various relative density (from 30% to 75%) was increased in the range of 40–95% for a smooth pile at a small displacement and 90% at a large displacement. For rough pile, the ratio of dense to loose relative density soil-pile reaction was from 2.0 to 3.0 at a small to large displacement. Direct comparison of the developed curve shows significant differences in the magnitude and shapes with the existing load-transfer curves. Good comparison with the experimental and design studies demonstrates the multidisciplinary applications of the present method.